health body systems

The human skeleton has about __________ bones.

• 150

• 50

• 180

• 206

What is the main organ of the circulatory system?

• arteries

• veins

• lungs

• heart

_________________ keeps your muscles flexible.

• Exercising

• Stretching

• Slouching

• Healthy eating

Which body system contains the stomach?

• skin

• digestive system

• respiratory system

• nervous system

What body system is this?

• skin

• nervous system

• circulatory system

• digestive system

What body system is this?

• skin

• respiratory system

• nervous system

• skeletal system

What system is this?

• respiratory system

• skin

• nervous system

• muscular system

Which one is NOT a body system

• Nervous

• Nerves

• Respatory

• Circulatory

Select the correct bone that the arrow is pointing to.

• Pelvis

• Backbone

• Clavicle

• Rib

The human heart has ... chambers